Shoe-sewing machine.



No. 705,063. Patented July 22, I902. z. T. FRENCH & w. c. MEYER. SHOESEWING MACHINE.

(Application filed Oct. 14, 1897.) (Ilo Model.) 4 Sheets-Sh at I.

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Patented July 22, I902. Z. T. FRENCH &. W. C. M'EYEB.

SHOE SEWING MACHINE.

(Application filed Oct. 14, 1897.)

4 Sheets-Sheet 2.

(No Model.)

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No. 705,063. Patented July 22, I902. Z. T. FRENCH & MEYER. suns SEWINGmomma.

(Application filed Oct. 14, 1897.) (No Model.) 4 She t -S eet 3.

No. 705,063. Patented July 22, I902.

Z. T. FRENCH & W. C. MEYER.

SHOE SEWING MAGHINE.

(Application filed Oct. 14, 1897.)

(No Model.) 4 Sheets-Sheet 4.

I point of the two threads may be located mid- UNITED STATES m ca.

ZAOI-IARY T. FRENCH AND WILLIAM C. MEYER, OF BOSTON, MASSACHUSETTS.

SHOE SEWlNG MACHINE.

SPECIFICATION forming part of Letters Patent No. 705,063, dated July 22,1902. Application filed October 14, 1897. Serial No. 655,165. (Nomodel.)

To all whom it may concern:

Be it known that we, ZAOI-IARY T. FRENCH and WILLIAM C. MEYER, ofBoston, county of Suffolk, and State of Massachusetts, have invented anImprovement in Sewing-Machines, of which the following description, inconnection with the accompanying drawings, is a specification, likeletters and numerals on the drawings representing like parts.

This invention relates to that class of waxthread sewing-machinesespecially designed for sewing on the Welts of boots and shoes; and ithas for its object to improve and simplify the construction of the same,to the end that the stitch-forming devices may work rapidly and thestitches may be uniformly made and firmly set and the looking orcrossing way between the opposite faces of the work or at any otherpoint desired.

In accordance with this invention we provide the machine with deviceswhereby a measured quantity of needle-thread may be taken from itssupply before the commencement of the next stitch to be made and alsowith means whereby a measured quantity of shuttle-thread may be takenfrom its supply likewise before the commencement of the next stitch tobe made, the measured quantities in each instance being sufficient toform the stitches.

The measured quantities of needle-thread and of shuttle-thread arerespectively drawn from their supplies by devices or means independentof the stitch-forming mechanism in the performance of its regularfunctions, and the stitch-forming mechanism being thus relieved of thiswork, which heretofore it has had to perform either in whole or in part,is free to operate very rapidly, as neither the take-up nor any otherpart of the stitch-forming mechanism is overtaxed. Also by thusrelieving the stitch-forming mechanism hard tension devices for thethreads maybe employed, which enables the stitches to be firmly set.

The measured quantity of needle-thread may be drawn off of its supply bythe employment of a thread-clamp and pull-off, the former holding thethread while the latter draws a predetermined quantity of it from itssupply.

The measured quantity of shuttle-thread maybe drawn off of its supply bymoving the bobbin rearwardly or away from the work as, for instance, theshuttle and bobbin may be supported by a suitable shuttle-carrier, andsaid shuttle-carrier maybe moved toward and from the work. When theshuttle-carrier recedes from the work, the shuttle-thread will be drawnoff of its supply, and when said shuttle-carrier approaches the work theshuttle-thread thus drawn off will be delivered for the formation of thenext stitch.

WVhen the shuttle-carrier recedes from the Work and the shuttle-threadis being drawn oif, the shuttle is not performing any of its regular orprescribed functions. By employing a shuttle-carrier having a movementfrom and toward the work we find that as it recedes additional workingspace is provided for the needle and as it returns the beak of theshuttle maybe brought into correct position to enter the loop ofneedle-thread, and the several parts of the stitch-forming mechanism maybe more compactly arranged.

The measured quantity of shuttle-thread is taken from or drawn oif ofits supply while the needle-thread is held taut-as, for in stance, whilethe needle-thread take-up isin its most elevated position or occupies aposition most remote from the work-said takeup at such time holding theneedle-thread taut and pulling firmly on the lock, which is set in thework. By drawing off the shuttle-thread While the needle-thread is soheld taut there is no danger of the lock being drawn out of the work;but we do not desire tothus limit our invention, as the needle-threadmay be otherwise held taut while the shuttle thread is being drawn oi'f.

Provision is made whereby the quantity of shuttle-thread drawn off ofits supply may be varied in order that the lock may be located atdifferent points between the opposite faces of the work.

The parts are preferably so constructed and arranged that the measuredquantity of needle-thread will be drawn off of its supply during thetime the take-up rises, which is thereafter given up when the take-updescends, and the measured quantity of shuttle-thread will be drawn offof its supply when the takeup is in its elevated position, holding theme die-threads taut, and is thereafter given up as the take-up descends;yet the thread-clamp, which holds the needle-thread while a measuredquantity is being drawn oif, lingers and still holds the needle-threadwhile the takeup is in its elevated position and while the measuredquantity of shuttle-thread is being drawn off. Consequently the measuredquantity of shuttle-thread is drawn off while the needle-thread is heldpositively locked by the thread-clamp.

Also in accordance with this invention the shuttle and needle areadapted to turn on parallel axes, and they are located one in front ofthe other, and consequently work in parallel vertical planes, and saidshuttle and needle are so disposed relative to each other that thevertical planes in which they work are as close together as possible,and when the shuttle is in its extreme forward position its beak willcorrectly enter the loop of needlethread and when in its rearwardposition will provide ample working space for the needle.

Figure 1 shows in front elevation a lockstitch sewing-machine embodyingthis invention. Fig. 2 is a left-hand side elevation of the same. Fig. 3is a right-hand side elevation of the same. Fig. iis a side view of theshuttle, shuttle-carrier, and means for operating it; and Fig. 5 is aplan view and partial section of the parts shown in Fig. 4.

The main frame comprises, essentially, the upright standard or column A,surmounted by a table A, having erected thereon several verticaluprights A which are constructed and arranged to afford bearings for themain shaft B, having secured to it several operating-cams, and saiduprights also afford bearings for the rod or bar (land for the otheroperating parts of the machine.

(1 represents the wax-pot, which, so far as this invention is concerned,may be of any usual or suitable construction, and it is herein shown aslocated at the front side of the machine and directly above the tensiondevice Z1, which latter is or may be of any-usual or suitableconstruction.

I 0 represents a pull-off for the needle-thread which operates inconjunction with other parts to be described to draw off of thethreadsupply a measured quantity of thread for the next stitch, and, asherein shown, (see Fig. 2,) said pull-off consists of a bell-crank leverpivoted at a to the frame, having a roll 0 at the extremity of one ofits arms over which the thread 2 passes and having the extremity of itsother arm connected by a rod or bar 0 with aslotted arm c, projectingfrom a hub 0 mounted to oscillate on a bar 0, supported by the mainframe, and to said hub c a rearwardly-projecting arm 0 is secured, whichhas at its extremity a stud 0 with or Without aroll thereon, whichenters a cam -groove formed in one side or face of a cam wheel or diskD, which is secured to the main shaft 13, said groove being herein shownas formed in the right-hand side or face of said disk.

The rod or bar a is adjustably connected with the slotted arm 0, so thatthe pull-0E 0 may be adjusted in such a manner as to operate to pull offmore or less needle-thread from the thread-supply, as desired. I

A thread-clamp is provided next to the pullolf, (see Fig.2,) by means ofwhich the thread maybe held while the pull-off is operated to draw off ameasured quantity of thread. The thread-clamp is herein shown as agrooved roll 6, over which the thread 2 passes, mounted on a fixed stude, and a thread-engaging finger e pivoted at 0 having its lower endconstructed and arranged to clamp the thread in the groove formed on theperiphery of said roll 6, and the upper end of said thread-engagingfinger is connected by a rod or bar 6 with one arm 6 of a bell-cranklever pivoted at eythe other arm of said lever projecting rearwardly andhaving a stud e at its extremity, with or without a roll thereon, whichenters a cam-groove formed in one side or face of the cam wheel or diskD, said groove being herein shown as formed in the right-hand side orface of said disk. 7

The thread-clamp operates to clamp and hold theneedle-thread while thepull-off 0 draws a measured quantity from the needlethread supply; but apull-off and threadclamp for the needle-thread, whereby a meas-' uredquantity is or may be drawn from the thread-supply for the next stitchto be formed, is shown in our Patent No. 412,703, dated October 3, 1889,so that we do not herein broadly claim such features, except ashereinafter stated.

The thread 2 passes from the thread-clamp to an auxiliary take-up,which, as herein shown, consists of a short arm 1., pivoted at 1" to themain frame and having at its lower extremity a roll over which thethread 2 passes, and having. two rearwardly-projecting ears i 2' locateda short distance apart, or, in lieu thereof, it may be a slotted armwhich receives between them the stud which latter serves as a stop tolimit the movement of said arm i in each direction. A spring t isconnected at one end to said arm 11 and at the other end to the frame,and it operates to draw said arm rearwardly and hold it with one of itsprojections 2' in engagement with the stop t As the thread 2 is drawn upby the main take-up, to be described, the auxiliary take up will yield.The thread 2 passes from the auxiliary takeup to the main take-up,which, as herein shown, consists of an arm at, (see Figs. 2 and 3,)having at its extremity a roll over which the thread 2 passes, said armbeing mounted upon the bar 0 and adapted to vibrate as required, andsaid arm has at its rear extremity a stud with or without a rollthereon, which enters a cam-groove formed or provided in one side orface of a cam wheel or disk D, which is secured to the main shaft B. Thethread 2 passes from the take-up m to the looper n, which is secured tothe for ward end of a horizonal shaft n, having its bearings in a partof the framework.

it represents the looper.

A thread-finger 0 is provided, which is adapted to carry theneedle-thread rearwardly from the looper, and, as herein shown, saidthread-finger 0 is curved and provided with a recessed or grooved end,which receives the thread, and said thread-fingero projects from a hubmounted on a stud o, and a short arm 0 projects rearwardly from saidhub, the extremity of which is connected by a rod or bar 0 with theforward end of an oscillating bar 0, mounted on thebar O, and the rearend of said bar 0 has a stud which enters a cam-groove formed orprovided in one side or face of the wheel or disk D, being herein shownas in the right-hand side of said disk.

29 represents the channel-guide, whicliis secured to an arm pivoted toaprojection 19 on a transversely-movable feed-slide 1', said arm havingan upward extension 29 bearing a roll, which engages a cam wheel or diskD The feed-slide r is supported in a guideway 0*,formed in theframework, and is adapted to move back and forth in the direction of thefeed of the work.

The awl s, which in this instance serves only as a feeding-finger, issecured to the end of a gooseneck-arm s, which is formed or providedwith a shank which passes obliquely up through a hole provided for it inthe aforesaid projection 19 on the transversely-movable feed-slide. Thefeeding devices, however, are not herein described in detail, as theyare included in another application filed by us March 10, 1900, SerialNo. 8,196.

The welt-guide it, which in this instance also serves as the back gage,is formed with an elongated throat for the passage of the needle 25 andhas also a guideway for the welt, and said guide it is adapted to bemoved back and forth or toward and from the work to serve as a rest forthe'work and also to cooperate with the channel-guide in holding thework stationary while the feeding awl is brought into engagement withit. The weltguide it and means for moving it are not herein described indetail, as theyform a part of another application filed by us March 10,1900, Serial No. 8,196.

The curved hooked needle 1 is secured to the needle-segment 25', (seedotted lines, Fig. 3-,) which is pivoted to the frame of the machine andwhich is connected by a short link i which may be curved more or less,with an arm t projecting from a hub t mounted on the bar 0, said arm ihaving a rear extension, which is provided with a stud which enters acam-groove formed or provided in one side or face of the cam wheel ordisk D said groove being herein shown as formed on the lefthand side ofsaid disk.

The shuttle w, which may be of any suitable or usual construction andadapted to contain a bobbin, is set concentricallyin a circularly-formedrecess in a shuttle-carrier w,

upwardly and has connected to its upper end one end of a connecting-rodin, the opposite end of said rod being connected with a slotted arm 10(see dotted lines, Fig. 2,) projecting downwardly from a hub w mountedon a stud on the framework, and an arm 109 projects forwardly from saidhub to which is provided at its extremity with a stud which enters acam-groove formed or provided in one side or face of the cam-disk D,being in the left-hand side or face of said disk. As said disk Drevolves the sliding shuttle-carrier will be moved toward and from thework. As said shuttle-carrier and shuttle move toward and from the workthe bobbin contained in said shuttle and disposed concentrically theretowill be correspondingly moved, andit will be seen that as saidshuttle-carrier and bobbin are moved rearwardly a predetermined ormeasured quantity of shuttle-thread sufficient for the next stitch willbe drawn from the bobbin, which is thereafter delivered when saidshuttle-carrier is moved in a direc tion toward the work. The movementof the shuttle-carrier will be increased or diminished as required todraw off more or less shuttle-thread by adjusting the end of theconnecting-rod w along in the slot in the arm 10 As the shuttle-threadis thus drawn from its supply by the receding shuttle-carrier theneedle-thread will at such time be held taut by the take-up, which willat such time occupy its most elevated position or will occupy a positionmost remote from the work, and the lock of the last completed stitchwill be set in the work. The needle-thread being thus held taut enablesthe shuttle-thread to be drawn off without drawing the lock out of thework, which is important, and said taut needle-thread also serves as apoint of resistance for the shuttle-thread while it is being drawn off.Also as said shuttle-carrier moves in and out or back and forth it willbe seen that when it is in its rearward position ample space is affordedfor the descending needle-segment. It will be readily seen that bydrawing off the shuttle-thread in this manner in sufficient quantitiesfor the stitches the needle thread take-up or any other part of thestitch-forming mechanism is not obliged to do this work, as is usual inlock-stitch sewing-machines, which, as heretofore stated, is animportant feature in the present machine; but instead of drawing ofisaid shuttle-thread by moving the shuttlecarrier we desire it to beunderstood that said shuttle-thread may be drawn off of its supply inmany ways and by many different devices independent of the stitch-formingmechanisni in the performance of its regular functionsfall of whichwhen employed in combination with means also independent of thestitch-forming mechanism in the performance of its regular functions fordrawing off measured supplies of needle-thread come, within the spiritand scope of this invention.

The shuttle is oscillated by a toothed gear 0 which is engaged by atoothed sector 0 formed at the extremity of an arm 1 projectingdownwardly from a hub v mounted in the bar 0; but herein the movement ofthe shuttle-carrier toward and from the work is in a linesubstantiallytangential to the arc of the toothed sector 0 so that saidshuttlecarrier may be moved toward and from the work regardless of theposition of said toothed sector, it being understood that theshuttlecarrier travels but a short distance.

The shuttle oscillates on an axis in parallelism with the axis of theneedle, and consequently the shuttle-carrier moves toward and from thework in a direction at right angles to the axis of the needle and whenin its rearward position provides ample working space for the needle,and when in its forward positionits beak will correctly enter the loopof needle-thread.

A loop-spreader y is attached to the lower end of an oblique shaft y,having its bearings in the framework, and the upper end of said shafthas a pinion (see'dotted lines, Fig. 2) which is engaged by a rack y,formed on or secured to a bar which is adapted to slide in a suitableguideway provided for it, and said rack is connected by a link g withthe lower end of an arm g, which is pivoted at y" to the frame, saidvarm having an arm 1 formed integral with it, which bears a stud whichenters a cam-groove formed or provided in one side or face of thecam-disk D.

The loop-spreader is located at one side of the needle and is designedto cross in front of the needle and to move in a direction substantiallyparallel with the axis of the oscillating shuttle, and when so moved itengages the lower thread of the loop on the needle and carries it acrossin front of the shuttle to thereby form a more or less triangular-shapedloop, which is so held as to receive the beak of the shuttle; but saidloopspreader and means for operating it form the subject-matter ofanother application filed by us March 9, 1900, Serial No. 7,986.

The operation of the machine is as follows: The welt-guide, which isalso the back gage, is thrust rearwardly to admit the work. Then saidgage comes forward and is locked and the work is held against thechannel-guide, which at such time enters the channel in the solo. Theneedle then comes forward, and at the same time the thread-finger at theopposite side of the work moves rearwardly with the needle-thread, theneedle penetrates the work, the take-up gives up its thread, and

the looper carries the thread around the hook of the needle. Then theneedle retreats and passes rearwardly with the thread back through thework, and the loop of needlethread is drawn through. When the needle isthus passed back through the work and is free from the work, thechannel-guide moves toward the right into position for the next stitch,and the needle which has thus passed back through the work has the loopof thread thereon, and the loop spreader is then brought into positionto intercept said loop of thread, carrying the lower thread of the loop,which is on the left side of the needle, to one side, spreading the twothreads and forming a triangle in front of the shuttle in which theshuttle thereafter enters. The shuttle then oscillates and carries theneedlethread upwardly as a loop, taking said loop away from the needleand disengaging it from the needle and loop-spreader, leaving it free topass around the shuttle, and at such time the loop thus formed is uponthe beak of the shuttle. Meantime while the shuttle is passing throughthe loop the take-up is descending, the awl-feeding finger comes downupon and engages the work, and the back gage or welt-guide retreats atsuch time or moves rearwardly to admit of the work being fed along, andthe awl-feeding finger is actuated to then feed the work alongjustprevious to the stitch which is thus being formed is set. During theaction of the awl-feeding finger in'feeding along the work the take-uprises and draws the loop of thread from or off of the shuttle, settingthe stitch when or as it arrives at its most extended or remote positionfrom the work. During the time that the take-up rises the thread-clampoperates to clamp'the needle-thread,and while the needlethread is thusclamped the pull-off operates to draw off a supply of needle-thread forthe next stitch. The thread clamp, however, continues to remain in itslocking engagement with the needle-thread, while the takeup rises andsets the stitch. When the take-up has arrived at its most extended orremote position from the work,with the needle-thread held taut and thestitch set in the Work and the needlethread still held locked by thethread clamp, the shuttle is bodily moved rearward in order that ameasured quantity of shuttle-thread may be drawn ofi of the bobbin,which is to be thereafter delivered for the next stitch. The measuredquantity of shuttle-thread thus drawn off of its supply is delivered upfor the next stitch, while the take-up descends to deliver up itsneedlethread.

We have herein referred to the shuttle as having an oscillatingmovement; yet by such term we intend to-include a shuttle having anycircular motion about its axis.

We claim- 1. In a lock-stitch sewing-machine, stitchforming mechanismincluding a shuttle turning on a horizontal axis and adapted to containa bobbin, a shuttle-carrier bearing said shuttle, means for moving saidshuttle-carrier in a direction at right angles to the axis of saidshuttle to bodily move the shuttle and bobbin a predetermined distanceaway from the work and thereby draw off the bobbin a quantity ofshuttle-thread for the next stitch, and to thereafter move saidslluttlecarrier in the opposite direction to deliver said sh uttlethreadwhen the next stitch is being formed, and means for holding theneedle-thread taut While the shuttle-carrier is moving away from thework, substantially as described.

2. In a lock-stitch sewing-machine, stitchforming mechanism includingshuttle turning on a horizontal axis and adapted to contain a bobbin, ashuttle-carrier bearing said shuttle means for moving saidshuttlecarrier in a direction at right angles to the axis of saidshuttle to bodily move the shuttle and bobbin a predetermined distanceaway from the work and thereby draw off the bobbin a quantity ofshuttle-thread for the next stitch, and to thereafter move saidshuttle-carrier in the opposite direction to deliver said shuttlethreadwhen the next stitch is being formed, means for varying the extent ofmovement of said shuttle-carrier, and means for holding theneedle-thread taut while the shuttle-carrier is moving awayfrom thework, substantially as described.

Ina lock-stitch sewing-machine,the combination of stitch-formingmechanism including a needle, a reciprocating shuttle-carrier bearing anoscillating shuttle, means for moving said shuttle-carrier and shuttleaway from the work to draw off a supply of shuttlethread for the nextstitch, an adjusting device for varying the extent of movement of saidshuttle-carrier, and means for holding the needle-thread taut while theshuttle-carrier is moving away from the work, substantially asdescribed.

t. Inalock-stitchsewing-machine,thecon1- bination of stitch-formin gmechanism includ--- ing a needle, a reciprocating shuttle-carrierbearing an oscillating shuttle, means for moving said shuttle-carrierand shuttle away from the work to draw off a supply of shuttlethread forthe next stitch, and means for holding the needle-thread taut while theshuttlecarrier is moved to draw off shuttle-thread, substantially asdescribed.

5. Inalock-stitch seWing-machine,the conn bination of stitch-formingmechanism including a needle and a shuttle, a thread-clamp forpositively clamping and thereby locking the needle-thread at apredetermined time, and means for moving the shuttle-carrier and shuttle away from the work to draw off a supply of shuttle-thread for thenext stitch while the needle-thread is locked by said thread-clamp,substantially as described.

6. In a lock-stitch sewing-machine,the com bination of stitch-formingmechanism including an oscillating shuttle containing a bobbin, areciprocating shuttle-carrier bearing said oscillating shuttle, meansincluding a thread-clamp for holding the needle'thread taut, and meansfor operating said shuttlecarrier to bodily move the shuttle and bobbinand thereby draw off the bobbin a quantity of shuttle-thread while theneedle-thread is held taut, substantially as described.

7. Inalock-stitchsewing-machine,thecom: bination of stitch-formingmechanism including an oscillating shuttle containing a bobbin, areciprocating shuttle-carrier bearing said oscillating shuttle, means,including a thread-clamp, for holding the needle-thread taut, means foroperating said shuttle-carrier to bodily move the shuttle and bobbin andthereby draw off the bobbin a quantity of sh little-thread for the nextstitch while the needle-thread is held taut, and an adjusting device forvarying the distance said shuttlecarrier moves, substantially asdescribed.

8. Inalock-stitchsewing-machine,thecombination of stitch-formingmechanism including an oscillating shuttle containing a bobbin, areciprocating shuttle-carrier bearing said oscillating shuttle, means,including a thread-clamp, for holding the needle-thread taut, and meansfor operating said shuttlecarrier, during the time the shuttle is notperforming its regular functions, to bodily move the shuttle and bobbinand thereby draw off the bobbin a quantity of shuttle-thread for thenext stitch while the needle-thread is held taut, and thereafter deliversaid shuttlethread when the next stitch is being formed, substantiallyas described.

9. In a lock-stitch sewing-machine, the combination of stitch-formingmechanism including an oscillating shuttle containing a bobbin,

ICC

a reciprocating shuttle-carrier bearing said oscillating shuttle,means,including a threadclamp, for holding the needle-thread taut,and meansfor moving said shuttle-carrier away from the work to thereby bodilymove the shuttle and bobbin and draw off a quantity of shuttle-threadfor the next stitch while the needle-thread is held taut by saidthreadclamp, and for thereafter moving said shuttle-carrier toward thework to deliver up said shuttle-thread when the next stitch is beingformed, substantially as described.

10. In a lock-stitch sewing-machine, stitchforming mechanism including aneedle turning on a horizontal axis, its segment and means for operatingit, and shuttle turning on a horizontal axis in parallelism with theaxis of said needle, a shuttle-carrier bearing said shuttle, means formoving said shuttlccarrier from and toward the needle, in a direction atright angles to the axis of said needle, to thereby draw off a measuredquantity of shuttle-thread and thereafter deliver said shuttle-threadwhen the next stitch is being formed, and means for holding the needlethread taut while the shuttle-carrier is mov ing away from the needle,substantially as described.

11. In a lock-stitch sewing-machine, stitch forming mechanism includinga needle, its segment and means for operating it and an oscillatingshuttle, a shuttle-carrier bearing said oscillating shuttle, means formoving said shuttle-carrier rearward, away from the work, to therebyprovide working space for the needlesegment and to draw off a supply ofshuttle-thread for the next stitch, and for moving said shuttle-carrierforward, toward the work, to deliver up said shuttle-thread and to bringthe beak of the shuttle into correct position to enter the loop ofneedle-thread, and means for holding the needle-thread taut while theshuttle-carrier is moving away from the work, substantially asdescribed.

12. In a lock-stitch sewing-machine, stitchforming mechanism including ashuttle oscillating on a horizontal axis, a sliding shuttlecarrierbearing said oscillating shuttle movable in a direction at right anglesto the axis of oscillation of the shuttle, means for sliding saidshuttle-carrier toward and from the work, and means for oscillating thesaid shuttle,substantially as described.

13. In a lock-stitch sewing-machine, stitchforming mechanism includingan oscillating shuttle, a sliding shuttle-carrier bearing saidoscillating shuttle, means for sliding said sh Little-carrier toward andfrom the work, and means for oscillating said shuttle comprising apinion and a vibrating sector, the sliding movement of theshuttle-carrier being substantially tangential to the arc of saidsector, substantially as described.

14. In a lock-stitch sewing-machine, the combination of stitch-formingmechanism, means for drawing off a quantity of needlethread for the nextstitch operated independently of the stitch-forming mechanism in theperformance of its regular functions and means for drawing off aquantity of shuttlethread for the next stitchalso operated independentlyof the stitch-forming mechanism in the performance of its regularfunctions, substantially as described. I

15. In a lock-stitch sewing-machine, the

combination of stitch-forming mechanism including a needle, anoscillating shuttle and a stitch-setting device, means independent ofthe stitch-forming mechanism for drawing off a quantity of needle-threadfor the next stitch, a shuttle-carrierbearing said oscillating shuttle,and means for moving said shuttle-carrier rearward to draw off aquantity of shuttle-thread for the next stitch while the needle-threadis held taut at the completion of the stitch by the stitch-settingdevice, sub stantially as described.

16. In a lock-stitch sewing-machine, the combination of stitch-formingmechanism, a pull-off for drawing off a measured quantity ofneedle-thread for the next stitch while the take-up rises which isafterward delivered upon the descent of said take-up, and means fordrawing off a measured quantity of shuttlethread for the next stitchwhile the take-up is holding the needle-thread taut at the comp pletionof the stitch which is afterward delivered while the take-up descends,substantially as described.

17. In a look-stitch sewing-machine, the combination of stitch-formingmechanism, a thread-clamp and pull-off for the needlethread, the latteracting while the thread is clamped to draw a measured quantity ofneedle-thread off of its supply for the next stitch, a take-up for saidneedle-thread which operates to set the stitch, and means for drawing ameasured quantity of shuttle-thread off of its supply while theneedle-thread is held taut by said take-up at the completion of thestitch, and for thereafter delivering up said shuttle-thread for thenext stitch, substantially as described.

18. In a lock-stitch sewing-machine, the combination of stitch-formingmechanism, a take-up for the needle-thread, a locking device for saidthread, means for drawing off a measured quantity of needle-thread forthe next stitch while the needle-thread is locked, and means for drawingoff a measured quantity of shuttle-thread for the next stitch also whilethe needle-thread is locked, substantially as described.

19. In a lock-stitch sewing-machine, the combination of stitch-formingmechanism, a thread-clamp, and pull-off for the needlethread, the latteracting while the thread is clamped to draw a measured quantity ofneedle-thread off of its supply for the next stitch, means for taking upthe needle-thread and for setting the stitch during which time theneedle-thread is drawn taut, and means for drawing a measured quantityof shuttle-thread off of its supply while the needle-thread is thus heldtaut, substantially as described.

20. In a lock-stitch sewing-machine, the combination of stitch-formingmechanism, means independent of the stitch forming mechanism for drawingoff a supply of needle-thread for the next stitch, and means for drawingoff a supply of shuttle-thread for the next stitch while theneedle-thread is held taut at the completion of the stitch, substantially as described.

21. In a lock-stitch sewingmachine, the combination of stitch formingmechanism, means independent of the stitch forming mechanism for drawingoff a supply of needle-thread for the next stitch, and means for drawingoff a supply of shuttle-thread for the next stitch during the time theshuttle is not performing its regular functions, substantially asdescribed.

22. In a lock-stitch sewing-machine, the combination of stitch-formingmechanism, a thread clamp and pulloff for the needlethread, the latteracting while the thread is clamped to draw a measured quantity ofneedle-thread off of its supply for the next stitch, a take-up for theneedle-thread which operates to set the stitch while theneedle-thread isheld clamped, and means for drawing a measured quantity ofshuttle-thread off of its supply for the next stitch while theneedlethread is held taut, and during the time the shuttle is notperformingits regularfunctions, substantially as described.

23. In a lock-stitch sewing-machine, the combination of stitch-formingmechanism, a thread-clamp, and pull-off for the needlethread, the latteracting while the thread is clamped to draw a measured quantity ofneedle-thread off of its supply for the next stitch, a take-up for theneedle-thread which operates to set the stitch while the needle-threadis held clamped, and means fordrawing off a measured quantity ofshuttle-thread While the needle-thread is held clamped and the take-upis holding the needle-thread taut at the completion of the stitch,substantially as described.

24. In a lock-stitch sewing-machine, a nee 25. In a lock-stitchsewing-machine, a needle and a shuttle turning on parallel axes, ashuttle-carrier bearing said shuttle and means for moving it away fromthe needle in a direction at right angles to the axis of said needle, toprovide working space for the needle, and also to drawoif a measuredsupply of shuttle-thread, and for moving it in the opposite direction,toward the needle, to deliver saidshuttle-thread and to bring the beakof the shuttle in correct position to enter the loop of needle-thread,and means for holding the needle-thread taut while the shuttle-carrieris moving away from the work, substantially as described.

In testimony whereof We have signed our names to this specification inthe presence of two subscribing witnesses.

ZACI-IARY T. FRENCH. XVILLIAM G. MEYER.

Witnesses:

B. J. NoYEs, MARY E. FOSTER.

